Questão 3312487

A = {(x,y) ∈ Ω: \(\sqrt{x^2\ +\ y^2}\) ≤ 1/2}

A = {(x,y) ∈ P(A): \(\sqrt{x^2\ +y^2}\) ≤ 1/2}

A = {(x,y,z) ∈ Ω: \(\sqrt{x^2\ +y^2\ +z^2}\) ≤ 1}

A = {(x,y) ∈ Ω: x + y ≤ 1/2}

A = {(x,y) ∈ Ω: x² + \(\sqrt{y}\) ≤ 1}